Magnetic Bit Drivers | McMaster-Carr

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94 Products

Fastener-Holding Nutdriver Bits

Hex Shank

Quick-Change Hex

Shank

Image of Attribute. Front orientation. Contains Annotated.

External

Hex

A mechanism inside the bit holds hex nuts and cap screws in place.

Hex Shank—Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

Quick-Change Hex Shank—Quick-change hex shank bits have a groove in the shank and fit directly into power tools without an adapter. They offer more reach for recessed holes and less wobble compared to a hex shank bit used with an adapter.

Magnet—Bits with magnet hold steel fasteners.

			Overall
	Drive Size	Bolt Clearance	Lg.	Dia.	Fastener-Holding Mechanism	Material		Each
1/4" Hex Shank



		1/4"	1/8"	1 1/8"	0.438"	Magnet	Steel	54515A61	00000


		5/16"	1/8"	1 1/8"	0.5"	Magnet	Steel	54515A62	0000
		3/8"	1/8"	1 1/8"	0.563"	Magnet	Steel	54515A63	0000
		7 mm	1/8"	1 1/8"	0.438"	Magnet	Steel	54515A64	0000
		8 mm	1/8"	1 1/8"	0.5"	Magnet	Steel	54515A65	0000
		10 mm	1/8"	1 1/8"	0.563"	Magnet	Steel	54515A66	0000


		1/4" Quick-Change Hex Shank



				3/16"	1/16"	1 5/8"	0.438"	Magnet	Steel	7291A81	0000


				3/16"	1/16"	2 5/8"	0.438"	Magnet	Steel	7291A82	0000
				1/4"	1/16"	4"	0.438"	Magnet	Steel	7291A31	0000
				1/4"	1/16"	6"	0.438"	Magnet	Steel	7291A32	0000
				1/4"	1/8"	1 3/4"	0.438"	Magnet	Steel	7291A14	0000
				1/4"	1/8"	2 5/8"	0.438"	Magnet	Steel	7291A21	0000
				1/4"	1/4"	12"	0.438"	Magnet	Steel	7291A94	0000
				5/16"	1/8"	1 3/4"	0.5"	Magnet	Steel	7291A15	0000
				5/16"	1/8"	2 5/8"	0.5"	Magnet	Steel	7291A22	0000
				5/16"	1/8"	4"	0.5"	Magnet	Steel	7291A83	0000
				5/16"	1/8"	6"	0.5"	Magnet	Steel	7291A84	0000


				5/16"	1/8"	12"	0.5"	Magnet	Steel	7291A95	00000
				3/8"	1/8"	4"	0.563"	Magnet	Steel	7291A85	00000
				3/8"	1/8"	6"	0.563"	Magnet	Steel	7291A86	00000
				3/8"	1/8"	12"	0.578"	Magnet	Steel	7291A96	00000
				3/8"	3/16"	1 3/4"	0.563"	Magnet	Steel	7291A16	0000
				3/8"	3/16"	2 5/8"	0.563"	Magnet	Steel	7291A23	0000
				7/16"	3/16"	1 3/4"	0.625"	Magnet	Steel	7291A38	0000
				7/16"	3/16"	2 5/8"	0.625"	Magnet	Steel	7291A24	00000
				1/2"	9/16"	1 3/4"	0.75"	Magnet	Steel	7291A42	00000
				1/2"	9/16"	2 5/8"	0.75"	Magnet	Steel	7291A45	00000


				5 mm	1/16"	2 5/8"	0.438"	Magnet	Steel	8534A43	0000
				5.5 mm	1/16"	2 5/8"	0.438"	Magnet	Steel	8534A44	0000
				6 mm	1/8"	1 5/8"	0.438"	Magnet	Steel	8534A46	0000
				7 mm	1/8"	2 5/8"	0.438"	Magnet	Steel	8534A49	0000
				8 mm	1/8"	1 5/8"	0.5"	Magnet	Steel	8534A47	0000
				10 mm	1/8"	1 3/4"	0.563"	Magnet	Steel	8534A48	0000

Bit Adapters

Magnet Bit

Holder

Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers. These adapters have a groove in the shank to fit in a power-tool chuck.

	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
Magnet Bit Holder



	1/4"	Hex	1/4"	2 1/8"	Stainless Steel	7225A21	00000


	1/4"	Hex	1/4"	2 3/8"	Stainless Steel	7225A28	0000
	1/4"	Hex	1/4"	2 5/8"	Stainless Steel	7225A29	0000
	1/4"	Hex	1/4"	2 7/8"	Steel	7225A24	00000
	1/4"	Hex	1/4"	3"	Stainless Steel	7225A22	0000
	1/4"	Hex	1/4"	3 7/8"	Stainless Steel	7225A31	0000
	1/4"	Hex	1/4"	5 7/8"	Stainless Steel	7225A32	00000
	1/4"	Hex	1/4"	7 7/8"	Stainless Steel	7225A33	00000
	1/4"	Hex	1/4"	10"	Stainless Steel	7225A34	00000
	1/4"	Hex	1/4"	12"	Stainless Steel	7225A79	00000
	1/4"	Hex	5/16"	3 1/4"	Steel	7225A25	00000


	5/16"	Hex	1/4"	3 1/8"	Steel	7225A71	00000
	5/16"	Hex	5/16"	3 1/8"	Steel	7225A72	00000
	7/16"	Hex	1/4"	3 1/8"	Steel	7225A19	00000

Bit Sets For Impact Drivers

Tougher than your average bits, the ones in these sets have a thin, flexible section on the shank that absorbs 30 times the impact force. They are heat treated for hardness and manufactured to tight tolerances, so they won't snap or slip under high stress.

Hex Shank—Use a bit adapter (not included) to attach these bits to power tools.

Wear-Resistant Diamond-Coated Steel—Diamond particles embedded in the tip bite into the screw head for a strong grip. Our most wear-resistant bits, these maintain their grip and shape, even when driving screws into tough materials.

	Adapters Included	Material	Container Type		Each
For Hand Tools







	1/4" Hex Shank Size

	30	1 Adapter 29 Bits	Hex: 3 mm, 4 mm, 5 mm, 6 mm (1" O'all Lg.)—1 ea. Phillips: No. 1 (1" O'all Lg.)—2 ea. Phillips: No. 2 (1" O'all Lg.)—3 ea. Phillips: No. 3 (1" O'all Lg.)—2 ea. Pozidriv®: No. 1, No. 3 (1" O'all Lg.)—2 ea. Pozidriv®: No. 2 (1" O'all Lg.)—3 ea. Torx: T10, T15 (1" O'all Lg.)—1 ea. Torx: T20, T30, T40 (1" O'all Lg.)—2 ea. Torx: T25 (1" O'all Lg.)—3 ea.	1/4" Female Hex × 1/4" Male Hex for Power Tools	Diamond-Coated Steel	Plastic Case	2779N11	0000000

Extra-Strong-Grip Fastener-Holding Nutdriver Bits

Quick-Change Hex

Shank

External

Hex

Because they make contact on the flat sides of fasteners rather than only on the corners, these bits significantly reduce slipping and stripping. They are also known as lobular bits.

Magnet—Bits with magnet hold steel fasteners.

			Overall
	Drive Size	Bolt Clearance	Lg.	Dia.	Fastener-Holding Mechanism	Material		Each
1/4" Quick-Change Hex Shank



		1/4"	1/8"	1 7/8"	0.438"	Magnet	Steel	7291A71	00000


		1/4"	1/8"	2 5/8"	0.438"	Magnet	Steel	7291A72	0000
		5/16"	1/8"	1 7/8"	0.5"	Magnet	Steel	7291A73	0000
		5/16"	1/8"	2 5/8"	0.5"	Magnet	Steel	7291A74	0000
		3/8"	3/16"	1 7/8"	0.563"	Magnet	Steel	7291A75	0000
		3/8"	3/16"	2 5/8"	0.563"	Magnet	Steel	7291A76	0000
		7/16"	3/16"	2 9/16"	0.625"	Magnet	Steel	7291A77	0000
		7/16"	3/16"	2 5/8"	0.625"	Magnet	Steel	7291A78	0000

Bit Screwdrivers


Magnet Bit Holder	Ultra Grip	Cushion Grip

Don't lug around a toolbox full of drivers—just swap out the bit to drive multiple screw sizes and styles with one tool. The ultimate space savers, these bit screwdrivers are a smart solution for on-the-go jobs.

					Shaft		Bit
No. of Sizes	Sizes Included	For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Material	Holding Mechanism	Grip Style		Each
10	External Hex: 1/4", 5/16" Tamper-Resistant Torx: T7, T8, T9, T10, T15, T20, T25, T27	1/4"	9 1/2"	Nickel-Plated Steel	4"	7/16"	Steel	Magnet	Plain	7262A48	000000
26	Drilled Spanner: No. 4, No. 6, No. 8, No. 10 Tamper-Resistant Hex: 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 2 mm, 2.5 mm, 3 mm, 5 mm Tamper-Resistant Torx: T7, T8, T10, T15, T20, T25, T27, T30, T40 Torq-Set®: No. 6, No. 8, No. 10	1/4"	8 1/2"	Stainless Steel	3 3/8"	5/16"	Steel	Magnet	Cushion	7262A49	00000
26	Phillips: No. 0, No. 1, No. 2, No. 3 Pozidriv®: No. 1, No. 2 Slotted: 3 mm, 4 mm, 4.5 mm, 5.5 mm, 6 mm, 6.5 mm Square: No. 0, No. 1, No. 2, No. 3 Torx: T6, T7, T8, T9, T10, T15, T20, T25, T27, T30	1/4"	9"	Steel	3 1/2"	3/8"	Steel	Magnet	Ultra Grip	7253A57	00000

Fastener-Holding Nutdriver Bit Sets


Quick-Change Hex Shank		External Hex

A magnet holds the nut in place.

					Overall
	Components Included	Bits Included	Drive Size	Bolt Clearance	Lg.	Dia.	Fastener-Holding Mechanism	Material	Container Type		Each
1/4" Quick-Change Hex Shank



		9 Bits	External Hex: 1/4" (2" O'all Lg.) External Hex: 1/4", 5/16" (1 5/8" O'all Lg.) External Hex: 1/4", 5/16", 3/8", 7/16" (2 5/8" O'all Lg.) External Hex: 3/8", 7/16" (1 3/4" O'all Lg.)	1/4", 5/16", 3/8", 7/16"	1/16" to 7/16"	1 5/8" to 2 5/8"	7/16" to 5/8"	Magnet	Steel	Plastic Caddy	7291A41	000000

Screw-Holding Bit Adapters

A magnetic ring at the end of the adapter holds flat-head screws in place to ensure good contact between the bit and screw. Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers.

	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Screw-Holding Mechanism	Material		Each
Magnet Bit Holder



	1/4"	Hex	1/4"	2 3/4"	Magnet	Stainless Steel	6005A1	000000

Bit Adapters for Bit Screwdrivers

Use a 4 mm bit in a bit driver that's designed for _1/4" bits.

	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
Magnet Bit Holder



	4	Hex	1/4"	1"	Steel	2587N12	00000

Bit Adapters for Impact Drivers

These adapters are designed to withstand the high torque of impact drivers. They have a groove in the shank to fit in the tool’s chuck and accept hex-shank bits (also known as insert bits) as well as hex-shank bits for power tools.

	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
Magnet Bit Holder



	1/4"	Hex, Quick-Change Hex	1/4"	3"	Steel	7225A76	000000

Quick-Drive Ratcheting Bit Screwdrivers

Drive screws four times faster than with other ratcheting tools. Grip the gear shift with one hand and turn the handle with the other to spin screws at record speed. Release the gear shift to revert back to a slower speed for more torque. These screwdrivers come with interchangeable bits, so you can drive a variety of screws with a single tool. Bits store neatly inside the handle when not in use.

					Shaft		Bit
No. of Sizes	Sizes Included	For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Material	Holding Mechanism	Grip Style		Each
4	Phillips: No. 1, No. 2 Slotted: 3/16", 1/4"	1/4"	9 1/4"	Stainless Steel	2 7/8"	3/8"	Steel	Magnet	Ultra Grip	5647A65	000000

Ratcheting Bit Screwdrivers


Style A	Style B

Drive multiple screw styles and sizes without lifting and repositioning your tool. A ratcheting handle drives screws with smooth, continuous motion to save time with every turn. Just snap one of the included bits onto the shaft and get cranking.

Style A—The handle has a wide grip for extra leverage.

Style B—Bits store neatly inside the handle so you won't lose them.

						Shaft		Bit
Style	No. of Sizes	Sizes Included	For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Material	Holding Mechanism	Grip Style		Each
A	1	Phillips: No. 2	1/4"	3 7/8"	Stainless Steel	2"	3/8"	Steel	Magnet	Plain	6541A11	000000
A	1	Phillips: No. 2	1/4"	5 13/16"	Stainless Steel	3 7/8"	3/8"	Steel	Magnet	Plain	6541A12	00000
A	1	Phillips: No. 2	1/4"	9 3/4"	Stainless Steel	7 7/8"	3/8"	Steel	Magnet	Plain	6541A13	00000
B	10	Phillips: No. 1, No. 2 Pozidriv®: No. 1, No. 2 Slotted: 3/16", 1/4" Square: No. 1, No. 2 Torx: T10, T15	1/4"	10"	Chrome-Plated Steel	3"	3/8"	Steel	Magnet	Ultra Grip	4057A52	00000

Bit Adapters for Ratchet Wrenches

Magnet Bit Holder

These adapters fit square-drive tools and accept hex-shank bits (also known as insert bits).

	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
Magnet Bit Holder



	1/4"	Hex	1/4"	2"	Steel	7229A61	000000


	3/8"	Hex	1/4"	2 1/8"	Steel	7229A62	00000
	3/8"	Hex	5/16"	2 1/2"	Steel	7229A82	00000
	1/2"	Hex	1/4"	2 3/4"	Steel	7229A83	00000

Bit Adapters for Rotary Hammers

Insert these adapters into your SDS-drive rotary hammer to use it with hex-shank bits (also known as insert bits).

	For Bit Hex Shank Size	Overall Lg.	Shank Dia.	Material		Each
Magnet Bit Holder



	Hex	1/4"	2 7/8"	0.393"	Stainless Steel	8845A21	000000

Electrically Insulating Bit Screwdrivers

If you accidentally touch a live circuit, these bit screwdrivers prevent a dangerous zap. An insulated handle and shaft absorb up to 1,000 volts of electric shock to meet EN and IEC standards. Use these screwdrivers for everything from installing electrical panels to repairing outlets, switches, and light fixtures. Change the bit to drive a variety of screws with a single tool.

					Shaft		Bit
No. of Sizes	Sizes Included	For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Material	Holding Mechanism	Grip Style	Specs. Met		Each
13	Phillips: No. 0, No. 1, No. 2, No. 3 Slotted: 5/32", 7/32", 1/4" Square: No. 1, No. 2, No. 3 Torx: T15, T20, T25	1/4"	9 1/8"	Plastic-Coated Steel	3 3/8"	0.48"	Steel	Magnet	Ultra Grip	IEC 60900, EN 60900	7315A71	000000

Precise-Control Bit Screwdrivers

Make fine-tuned adjustments on a variety of screws in electronics, miniature models, microscopes, and more. Also known as precision and miniature screwdrivers, these give you better control than a standard screwdriver to avoid stripping tiny screws or cracking delicate materials. Press the end of the handle with your palm to apply constant pressure while turning the body of the screwdriver with your fingertips. Snap a bit (not included) onto the shaft to fasten multiple screw sizes and styles with a single tool.

	Shaft
Overall Lg.	Lg.	Overall Wd.	Material		Each



	6 1/4"	2 3/8"	3/8"	Steel	2583N11	000000

Strong-Hold Bit Screwdrivers

When locked into the chuck, these bits won't budge. Use these screwdrivers for high-torque applications, such as driving long screws into dense material.

Pull back the chuck to insert a bit in the magnetic holder; push it forward to lock it in place. Bits store neatly inside the handle so you won't lose them.

					Shaft		Bit
No. of Sizes	Sizes Included	For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Material	Holding Mechanism	Grip Style	Container Type		Each
6	Phillips: No. 1, No. 2, No. 3 Slotted: 3/16", 7/32", 1/4"	1/4"	8"	Steel	3 1/4"	5/8"	Steel	Quick-Change Chuck	Ultra Grip	Fabric Case	8343A43	000000

Tight-Clearance Bit Screwdrivers with Offset Tip

Fasten multiple screw sizes and styles in spots with low overhead clearance. The offset head reaches into engine compartments and other spaces where there isn't room to turn a standard driver. Snap one of the included bits onto the shaft and stow the others in the handle so you won't lose them.

						Shaft		Bit
No. of Sizes	Sizes Included	For Bit Hex Shank Size	Overall Lg.	Offset Angle	Material	Lg.	Overall Wd.	Material	Holding Mechanism	Grip Style		Each
4	Phillips: No. 1, No. 2 Slotted: 3/16", 1/4"	1/4"	10"	105°	Steel	4 3/4"	1"	Steel	Magnet	Ultra Grip	5332A31	000000

Tight-Clearance Flexible Bit Screwdrivers

A flexible shaft bends around obstacles to access screws in hard-to-reach places. These screwdrivers snake into compact machinery where a rigid tool wouldn't fit. However, they may wobble if you crank them too hard. Attach a bit (not included) to drive a variety of screws with a single tool.

			Shaft
For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Bit-Holding Mechanism	Grip Style		Each
1/4"	19 3/4"	Rubber-Coated Steel	15"	11/32"	Magnet	Ultra Grip	5705A4	000000

Flexible Bit Adapters

Bend these adapters up to 90° to access hard-to-reach fasteners. Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers.

	For Bit Shank Type	For Bit Hex Shank Size	For Max. Drill Torque, in·lbf	Overall Lg.	Material		Each
Magnet Bit Holder



	1/4"	Hex	1/4"	42	7 1/2"	Steel	85255A11	000000


	1/4"	Hex	1/4"	156	11"	Steel	85255A13	00000

Screw-Guiding Bit Adapters

Keep bits from slipping. Insert a bit into the adapter, place a screw on the end of the bit, and slide the adapter sleeve over the screw. The sleeve retracts as the screw is driven. Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers.

	For Bit Shank Type	For Bit Hex Shank Size	For Max. Screw Head Dia.	Overall Lg.	Material	Sleeve Material		Each
Magnet Bit Holder



	1/4"	Hex	1/4"	3/8"	3 1/8"	Stainless Steel	Aluminum	52885A33	00000


	1/4"	Hex	1/4"	3/8"	4 5/8"	Stainless Steel	Aluminum	52885A34	0000

Tight-Clearance Ratcheting Bit Screwdrivers


Style A	Style B

Slip these compact screwdrivers between obstructions to spin screws in seconds. The ratcheting handle rotates with smooth, continuous motion, so you never have to lift and reposition your tool. Attach one of the included bits to the shaft to drive a variety of screws.

Style A—The handle has a wide grip for extra leverage.

Style B—Bits store neatly inside the handle so you won't lose them.

						Shaft		Bit
Style	No. of Sizes	Sizes Included	For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Material	Holding Mechanism	Grip Style	Container Type		Each
A	4	Phillips: No. 1, No. 2 Slotted: 1/4" Square Drive: 1/4"	1/4"	2 7/8"	Stainless Steel	2 3/8"	3/8"	Steel	Magnet	Plain	Plastic Case	52815A22	000000
B	8	External Hex: 1/4" Phillips: No. 1, No. 2 Slotted: 1/4", 3/16" Square: No. 1, No. 2 Torx: T15	1/4"	4 5/8"	Chrome-Plated Steel	1 1/2"	3/8"	Chrome-Plated Steel	Magnet	Plain	—	52725A41	00000

Tight-Clearance Ratcheting Bit Screwdrivers with Offset Tip

With Magnet

Swing these screwdrivers like a wrench to quickly spin screws in tight spots and tricky angles. They have offset tips that reach screws in engine compartments and other spaces with low overhead clearance. The ratcheting handle rotates with smooth, continuous motion, so you never have to lift and reposition your tool. Bits are not included.

For Bit Hex Shank Size	Overall Lg.	Offset Angle	Material	Bit-Holding Mechanism	Grip Style		Each
1/4", 5/16"	5 3/8"	25°	Chrome-Plated Steel	Magnet	Plain	52815A11	000000
1/4", 5/16"	5 1/2"	90°	Chrome-Plated Steel	Magnet	Plain	52815A21	00000

Strong-Hold Bit Adapters

Lock your bit into the adapter to prevent accidental disengagement. Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers. These adapters have a groove in the shank to fit in a power-tool chuck.

Magnetic Quick-Change Chuck—To secure a bit in adapters with quick-change chuck, pull back on the chuck to insert the bit and then push it forward to lock the bit place.

Magnetic-Twist-Lock Bit Holder—To secure a bit in twist-lock adapters, tighten the knurled end.

	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
Magnetic Quick-Change Chuck



	1/4"	Hex, Quick-Change Hex	1/4"	2"	Steel	7179A11	000000


	1/4"	Hex	1/4"	2 3/8"	Stainless Steel	8345A38	00000
	1/4"	Hex	1/4"	2 7/8"	Stainless Steel	8345A36	00000
	1/4"	Hex, Quick-Change Hex	1/4"	6"	Steel	7179A12	00000
	1/4"	Hex, Quick-Change Hex	1/4"	12"	Steel	7179A13	00000


	Magnetic-Twist-Lock Bit Holder



			1/4"	Hex	1/4"	3"	Stainless Steel	7225A41	0000


			1/4"	Hex	1/4"	3 1/8"	Stainless Steel	7225A49	00000
			1/4"	Hex	1/4"	6"	Stainless Steel	7225A42	00000